All parts › BMW M4 CSL › Fuel system › Filler neck
Filler neck
Part of Fuel system · about $210 to replace
What it is
Filler pipe from the flap to the tank.
What it does
Guides fuel into the tank and vents vapour to the charcoal canister.
How it fails
Capless seal sticks; a fuel smell after filling is the vent valve.
| Material | Stainless steel, rubber joint |
|---|---|
| Spec | 45 mm |
| capless |